(0 7 2)(1 20 17)(3 15 5)(4 18 9)(6 11 8)(10 16 12)(13 19 14)
ALLOWS (11/8)-SEQUENCE
1: (9 17 18)

(0 7 2)(1 20 17 4 18)(3 15 5)(6 11 8)(9)(10 16 12)(13 19 14)
2: (1 4 18)

(0 7 2)(1)(3 15 5)(4 20 17)(6 11 8)(9)(10 16 12)(13 19 14)(18)
3: (0 7 2)

(0)(1)(2)(3 15 5)(4 20 17)(6 11 8)(7)(9)(10 16 12)(13 19 14)(18)
4: (4 20 17)

(0)(1)(2)(3 15 5)(4)(6 11 8)(7)(9)(10 16 12)(13 19 14)(17)(18)(20)